V tourniquet



H. W. PLUMMER.

TUURNIQUET.

APPLICATION FILED OCT. 14. ms.

1,3Q2,050. Patentd Nov. 18, 1919.

"ninn snares Ba HENRY W. PLUMMELR, 0F .AUGU$TA, MAINE.

TOUBNIQUET.

original application filed. March 13, 1918, Serial No. 222,142. Dividedand this application filed October 14,

1918. Serial No. 257,975.

To all whom it may concern:

Be it known that l, IIENRY W. PLUMMnn, a citizen of the United States,residing at Augusta, in the county of Kennebec and State of Maine, haveinvented certain new and useful Improvements in Tourniquets, of whichthe following is a specification.

This invention relates to certain improvements in tourniquets, and it isan object of the invention to provide a device of this general characterincluding a body provided with a compression member together with a limbembracing compression band anchored at one end of the body, and havingits opposite end portion adjustably engaged with the body and whereinnovel and improved means are employed for effectively locking thecompression band in its different adjustments relative to the body, andwherein said means may be readily controlled by a persons hand engagedwith the body.

The invention consists in the details of construction and in thecombination and arrangement of the several parts of my improvedtourniquet whereby certain.important advantages are attained and thedevice rendered simpler, less expensive and other wise more com-enientand advantageous for use, as will be hereinafter more fully set forth. t

The novel, features of my invention will hereinafter be definitelyclaimed.

In order that my invention may be the better understoochl will nowproceed to describe the same with reference to the accompanyingdrawings, wherein.

Figure l is a View in elevation of a tourniquet constructed inaccordance with an embodiment of my invention, the inter--mediateportion of the limb encircling band being broken away;

.Pig. 2 is a fragmentary view in top plan of my improved device asillustrated in Fig. '1 and t l 3 'is an enlarged fragmentary sectionalview taken substantially on the line of Fig. l. n

As disclosed in the accompanying d awings, B denotes a block perferablyrectangu lar in form. C denotes a compression member coacting with thebody B in a manner and for a purpose set forth in my copendingapplication, Serial No. 222,142, filed March 13, 1918, and of which. thepresent application is a division.

Specification of Letters Patent tion is also provided with a slot 23throu Patented Nov. 18, 1919.

The longitudinal margins of one of the faces of the block B are definedby the oppositely directed flanges 2 provided with the slots 3 extendinglongitudinally of and substantially in parallelism with the side facesof the block B.

P denotes an elongated plate arranged longitudinally on a slightcurvature, and which has an end portion returned to afford a barrel 17through which is directed the bar 18 of one of the flanges 2 and asafforded by a slot 3. By this arrangement the plate P has swingingmovement about an axis substantially at right angles to the compressionmember (l. The plate P is also of such a length as to have its outer endportion engage a limb to which my improved tourniquet or hemostaticbandage may be applied. Suitably secured to the outer end portion of tthe plate P is a flexible limbembracing compresslon band or web WV whichhas its opposite end portion adjustably engaged with a second plate P.The outer end portion of the plate P is returned to afford a hook'member 19 insertible through a second slot 3 in a direction outwardlyof the member (l and which interlocks with the bar 20 iiiforded by asecond slot 3. The band W is preferably formed of textile material andprevent it from tippingwhen the same is being forced against the flesh.It is also preferred that the plates P and P be formed of steel.

Welded or otherwise secured to the outer face of the plate P in closeproximity to the hook member 19 is a cross'strip or plate 21 extendingtransversely of the plate. The

outer marginal portion of the plate 21 is off set relative to theplateP' and said offset portion has the slot 22 through which the freeend portion of the band W is threaded. The end portion of the plate Premote from the hook member 19, is offset outwardly on a predeterminedincline and such offset popg i which band W directed. The side marginalportions of the plate P are provided with the outstanding anddiametrically opposed wings or ears-2 4e whiclrse'rve as supports forthe pin extending transversely of the plate P. Pivotally engaged withthepin 25 are thearms 26carried by the opposite ends-of the lockingbar 27.The bar 27 I is provided withthe' teeth 28 which are adapted topenetrate or impinge upon- 3/1301- tion of the band disposedtherebeneath and as will hereinafter be more fully explained. The bar27is constantly -urged toward a the 7 plate P through themedium oftheexpansible member 29herein disclosedas a coiled sprlng and whichmember 1s interposed between the free end portion of therearwardlydirected arm 30 carried by theupper marginal portion ofthe bar27 and thebar or strip 31 to be hereinaftermore-particularly referred to'.

Thefree end portion of theband'is first threaded throughtheslot 23andextended between the plate P and the bar27, threaded through theslot.22, and then again threaded through the slot 23; The bandis thenreturned and passed beneath thebar '27. By imposing a pull upon thereturned ,portion or bight a oftheba-nd VV'the band tion act the bandwhen-the device 'is in applied position and particularlyduring itsapplication I' have slidably engaged withthe plate 21 and movable in rdirection-transverselyoi' the plate P the bar or strip 31 having one endportion provided with-an outstanding-V lateral extension 32 whichunderlies the free enl. -p0rtion of the arm 30 when at the-limit of itsmovement'i-n one direction and thereby serves toholdthe arm'30-against'depression: It is also-tob'e noted such close proximity tothe block B when the device is in applied position to permit therequisite operations thereof by the-digits of the hand engaged with theblock B.

The bar or strip 31 is provided with a slot 33 through which extendrivets "34L orthe like ;carrie'd bythe plate 21. The rivets 34 *servetomaintainthe bar or strip-31- inapiplied position upon the plate 21 andthe movement of said-bar for str ip31 is'limited bylthe slot a 33.employingia fplurality of rivetsl 34: or-=the-=like, it" will; Joeselfi-evident 'thatthe bar or strip is heldagainst swinging movement andis mounted for sliding movement in a fixed path. One of the rivets34also serves as ametaining means for an end portion of the expansiblemember .29.

By having the member 29 hearing directly upon the bar or strip 31, itwill be at once noted that the member 29 serves to normally maintain thebar or strip 31 against sliding movement so that the same will beeffectively held in position with the lateral extension 32 positionedbeyondorbeneath the arm 30, as the occasions-of practice maynecessitate. From the foregoing description, it is thoughtto be obviousthat a tourniquet constructed in accordance with myinvention isparticularly well adapted for use by reason of theconvenience=andfacility with which it may be assembled and operated, andit will also be obvious that my invention is susceptible of some changeand modification without departing from the principles andspiritthereof, and for this reason. I do not wish to be understood aslimiting myself to the precise arrangement and formation of the severalparts herein shown in carrying outmy invention in practice except ashere- I inafter claimed.

constantly urging the locking bar toward the plate and servin'gtonormally hold the second bar against movement.

2-. In combination with a plate adapted to have avmember adjustablyengaged there with, a swinginglocking bar carried by the plateforengagement with said member to hold the member against retrogrademovement, and a slide carriedby the plate and meeting with the lockingbar for locking the same against movement-and in engage ment with themember adjustably engaged with the plate, said slide having movement ina direction substantially parallel to the axis-of movement of theswinging locking bar.

In testimony whereof I hereunto ailix my signature.

HENRY w. PLUMMER.

